#include  
#include  
#include  

Using STD: : cin; 
Using STD: : cout; 
Using STD: : endl; 
Using STD: : string; 

The class Grand 
{
Private: 
Int hold; 
Public: 
Grand (int h=0) : hold (h) {} 
Virtual void the Speak () const {cout & lt; <"I am a grand class! \n"; } 
Virtual int Value const () {return hold; } 
}; 

The class Superb: public Grand 
{
Public: 
Superb (int h=0) : Grand (h) {} 
Void the Speak () const {cout & lt; <"I am a superb class!!!!! \n"; } 
Virtual void Say () const {cout & lt; <"I hold the superb value of" & lt; }; 

The class Magnificent: public Superb 
{
Private: 
char ch; 
Public: 
Magnificent (int h=0, char c='A') : Superb (h), ch (c) {} 
Void the Speak () const {cout & lt; <"I am a magnificent class!!!!!! \n"; } 
Void Say () const {cout & lt; <"I hold the character" & lt; }; 

Grand * GetOne (); 

Int main () 
{
Srand (time (0)); 
Grand * pg; 
Superb * ps; 
For (int I=0; I & lt; 5; I++) 
{
Pg=GetOne (); 
Pg - & gt; Speak (); 
If (ps=dynamic_cast & lt; Superb * & gt; Ps - (pg)) & gt; Say (); 
} 
cout <"Bye. \ n"; 
return 0; 
} 

Grand * GetOne () 
{
Grand * p; 
The switch (rand () % 3) 
{
Case 0: 
P=new Grand (rand () % 100); 
break; 
Case 1: 
P=new Superb (rand () % 100); 
break; 
Case 2: 
P=new Magnificent (rand () % 100, 'A' + rand () % 26); 
break; 
} 
Return the p; 
} 

GetOne new memory function, need to release?

CodePudding user response:

All things new must delete back

CodePudding user response:

new memory to release